AQD | Rillito Forecast

Updated On: 4/18/2025 - 8:25 AM

Click on each day to view forecast.

Friday Forecast:

PM₁₀

42 AQI
24-hr Avg: 45 µg/m³

Saturday Forecast:

PM₁₀

45 AQI
24-hr Avg: 49 µg/m³

Sunday Forecast:

PM₁₀

33 AQI
24-hr Avg: 36 µg/m³

Monday Forecast:

PM₁₀

36 AQI
24-hr Avg: 39 µg/m³

Tuesday Forecast:

PM₁₀

38 AQI
24-hr Avg: 41 µg/m³

Air Quality By Pollutant:

Pollutant

Friday
4/18/2025

Saturday
4/19/2025

Sunday
4/20/2025

Monday
4/21/2025

Tuesday
4/22/2025

PM₁₀

42

45

33

36

38

Pollutant

FRI

SAT

SUN

MON

TUE

PM₁₀

42

45

33

36

38

O₃ = Ozone, PM₁₀ = Particles ≤ 10 microns, PM_2.5 = Particles ≤ 2.5 microns

Forecast Discussion:

An unseasonably strong low-pressure wave will drop into Arizona later today (Friday), continuing an impressive stretch of daily, windy conditions through Saturday. The good news is that this week's winds have not resulted in substantially high PM10 (dust) levels, but we still can't rule out pockets of dust.

Moreover, the aforementioned wave looks to be cold enough to squeeze some moisture out of the atmosphere. As a result, Rillito may see some light rain Saturday morning. Any rain would help to reduce PM10.

After the winds and the possible rain on Saturday, weather conditions will calm down a bit for the rest of the period. Mostly sunny skies and light winds will return. As a result, PM10 will become mostly locally driven once again.

Check back on Monday morning for the next Rillito PM10 forecast.

- M. Graves
ADEQ Meteorologist